Girl group Fifth Harmony recently appeared on Good Morning America's Summer Concert Series on June 2 to perform their new single, "Down." The track is stirring buzz not only because it has the potential to be a hit song for the summer, but also because it marks the group's first song release since the departure of member Camila Cabello. Camila left the group in 2016 to pursue a solo career and since, 5H has continued without her.

The 5H fans — dubbed the Harmonizers — waited in line for hours to see the foursome perform. The fans were also quick to tweet about the performance. One fan tweeted, "Hey @FifthHarmony you girls are such an amazing group of girls great job on @GMA #5HonGMA," while another added, "I died and came back then died and came back. It was a never ending cycle while watching @fifthharmony slay on GMA. Love you girls."

The positive response from the single raises the question: "Will the group continue to be successful without Camila?" The mystery surrounding Camila's exit from 5H continues to raise questions among fans. She originally announced she was leaving to pursue her own music, but the drama surrounding the announcement ensued after the remaining members shared with fans that Camilla never informed them of her plans. Members Ally Brooke, Normani Kordei, Dinah Jane, and Lauren Jauregui shared on Instagram that they heard the news from her reps.

Camila vehemently denied these claims and shared her own version of events with fans: "I was shocked to read the statement the Fifth Harmony account posted without my knowing… Saying that they were just informed through my representatives that I was 'leaving the group' is simply not true. Just like the other girls said in their statement about their plans, I had also planned to continue with my own solo endeavors in the new year but I did not intend to end things with Fifth Harmony this way."

Despite the rocky breakup, Camila is finding success in her solo endeavors both personally and professionally. In fact, her new album "The Hurting. The Healing. The Loving." will debut later this year. The singer described the inspiration for the album in a heartfelt Instagram post as "The story of my journey from darkness into light, from a time when I was lost to a time when I found myself again."

She's expressed that her transition into creating her own music is something that she needed to pursue despite her loyalty to 5H.

"I think that happened to me as I was discovering my voice as an artist," she confessed. "Especially as a songwriter. I felt like I needed to express that. And it was just time to sing my story and sing words that were coming from my heart as opposed to words that people were writing for us."